Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quais comentários têm um modelo de 18sq?
 ###Tabelas: CREATE TABLE structures_past_or_present_between_550_and_600_m_1804_ft_and_1969_ft (structures_past_or_present_between_550_and_600_m_1804_ft_and_1969_ft_id AUTO_INCREMENT PRIMARY KEY, Pinnacle height VARCHAR, Year INT, Structure type VARCHAR, Main use VARCHAR, Country VARCHAR, Town VARCHAR) CREATE TABLE season_2_1995–1996 (season_2_1995–1996_id AUTO_INCREMENT PRIMARY KEY, Series # INT, Season # INT, Title VARCHAR, Directed by VARCHAR, Written by VARCHAR, Musical guest and song VARCHAR, Original air date VARCHAR, Production code VARCHAR) CREATE TABLE current_and_notable_past_models (current_and_notable_past_models_id AUTO_INCREMENT PRIMARY KEY, Model VARCHAR, Length Over All VARCHAR, Beam VARCHAR, Sail Area VARCHAR, Crew VARCHAR, Comments VARCHAR) CREATE TABLE wins_9 (wins_9_id AUTO_INCREMENT PRIMARY KEY, Year INT, Championship VARCHAR, 54 holes VARCHAR, Winning score VARCHAR, Margin VARCHAR, Runner(s)-up VARCHAR) CREATE TABLE top_10_in_total_attendance (top_10_in_total_attendance_id AUTO_INCREMENT PRIMARY KEY, League VARCHAR, Sport VARCHAR, Country VARCHAR, Season VARCHAR, Games INT, Average attendance INT, Total attendance INT)  
SELECT Comments FROM current_and_notable_past_models WHERE Model = 18sq